Champion's CT7 carbide tipped hole cutters are the perfect portable tool for cutting holes up to 1" in a variety of steels including stainless, cast iron, aluminum, and nonferrous materials. Designed for today's professional steel fabricators, welders, plumbers and mechanics. Features "triple-edge" teeth and ejector spring for fast hole cutting and slug ejection. The CT7 is an excellent cost effective alternative to bi-metal holesaws and S&D drills.